3 Reasons why there's a black band and dots around your windshield.

﻿Whenever you examine your car or when you're stuck in traffic, you probably have noticed a black band or dots around your windshield. If you've ever questioned yourself if they ever actually have a purpose, here are the main reasons why the windshield frit line is necessary.

The frit line is the black band that goes all around the windshield. The urethane that holds the glass to the frame is bonded on the frit line which gives it better adhesion to the glass. At our shop, we apply a primer on the inward side of the frit line to enhance the bond between the glass and the urethane.

While the inward of the frit line aids the bond between the glass and the frame, the outward blocks the UV rays from harming the urethane which would cause damage to the bond over time.

And last, the dots around the windshield gives the frit line an aesthetic transition instead of an end right after the black band. But some windshields also have extra dots added on the top part of the windshield near the mirror called "third visor". They help the driver by blocking the sun at certain angles if the visor above the head cannot do so.